I have a Intel NUC DN2820FYKH running the Wireless-N 7260. Been running for nearly a year now. Two weeks ago wireless stopped working. Finally found time to look at the issue. The wireless adaptor is not identified by the OS (running Kodibuntu) and looking in the BIOS I cannot see it there either. I have updated to the latest BIOS with no change.

Can anyone suggest a troubleshooting strategy? Wired connection works BTW, but the good lady does not appreciate the cable running into the lounge room. Go figure.

Even though you stated that the NUC is running the latest BIOS version, let me give you the link to install it using the F7 method that is very reliable, and the link for the .BIO file that you need to do the update, the latest BIOS version is 0053:

Also, I just wanted to let you know that Intel® does not test and validate Intel® NUC on Kodibuntu; however we know that a lot of NUC owners are using it successfully with many different operating systems, on the following link you will be able to see the different operating systems that were tested by Intel® with the NUC, so, you can confirm that information:

In regard to your question, normally in most of the NUCs the wireless card is not showing as a device, under onboard devices you will see the option to enable it and disable it, but the actual model is not showing.

Now, I will try to get the Intel® DN2820FYKH NUC, to confirm that information.

As soon as I do that, I will post the results in this thread.

Is it possible for you to take a screenshot of the BIOS? So we can see the actual place that you are looking at.

And yes, I checked also the Intel® DN2820FYKH NUC that we have in our lab, and the WLAN will not show in the onboard devices.

And it is a BIOS design thing, some of the NUC’s have that and some of them do not show it, in the most recent NUC’s the ones that have a core processor like NUC6i5SYH, they do show the WLAN on the BIOS.

I have one of these. As stated above wifi will not show up in the bios as a device. I would suggest booting from a USB stick to some flavor of Linux to see if wifi shows up/works in it. As long as you're using the latest kernel the wifi drivers should be built-in. What do you see in Kodi? Have you tried exiting Kodi to the desktop and checking to see if the wifi card works in Ubuntu? If so, does the card show up in the desktop environment?